If you’re having trouble creating curves for your armor, this tutorial by Shiaya Cosplay may help with that process!
A collection of videos on mask making with Worbla.
The detailed writeup for ChrisX’s Adjunct shoulder armor/pauldrons (StarCraft 2)
The detailed writeup for ChrisX’s StarCraft2 Adjunct chestpiece.
Here is a tutorial sharing the process of building a Breastplate for League of Legends Tryndamere.
Here are various methods you can use to add surface detail to your Worbla projects.